PMID- 22412373 OWN - NLM STAT- MEDLINE DCOM- 20120709 LR - 20211021 IS - 1553-7374 (Electronic) IS - 1553-7366 (Print) IS - 1553-7366 (Linking) VI - 8 IP - 3 DP - 2012 TI - Significant association of KIR2DL3-HLA-C1 combination with cerebral malaria and implications for co-evolution of KIR and HLA. PG - e1002565 LID - 10.1371/journal.ppat.1002565 [doi] LID - e1002565 AB - Cerebral malaria is a major, life-threatening complication of Plasmodium falciparum malaria, and has very high mortality rate. In murine malaria models, natural killer (NK) cell responses have been shown to play a crucial role in the pathogenesis of cerebral malaria. To investigate the role of NK cells in the developmental process of human cerebral malaria, we conducted a case-control study examining genotypes for killer immunoglobulin-like receptors (KIR) and their human leukocyte antigen (HLA) class I ligands in 477 malaria patients. We found that the combination of KIR2DL3 and its cognate HLA-C1 ligand was significantly associated with the development of cerebral malaria when compared with non-cerebral malaria (odds ratio 3.14, 95% confidence interval 1.52-6.48, P = 0.00079, corrected P = 0.02). In contrast, no other KIR-HLA pairs showed a significant association with cerebral malaria, suggesting that the NK cell repertoire shaped by the KIR2DL3-HLA-C1 interaction shows certain functional responses that facilitate development of cerebral malaria. Furthermore, the frequency of the KIR2DL3-HLA-C1 combination was found to be significantly lower in malaria high-endemic populations. These results suggest that natural selection has reduced the frequency of the KIR2DL3-HLA-C1 combination in malaria high-endemic populations because of the propensity of interaction between KIR2DL3 and C1 to favor development of cerebral malaria. Our findings provide one possible explanation for KIR-HLA co-evolution driven by a microbial pathogen, and its effect on the global distribution of malaria, KIR and HLA. FAU - Hirayasu, Kouyuki AU - Hirayasu K AD - Department of Human Genetics, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan. hirayasu@ifrec.osaka-u.ac.jp FAU - Ohashi, Jun AU - Ohashi J FAU - Kashiwase, Koichi AU - Kashiwase K FAU - Hananantachai, Hathairad AU - Hananantachai H FAU - Naka, Izumi AU - Naka I FAU - Ogawa, Atsuko AU - Ogawa A FAU - Takanashi, Minoko AU - Takanashi M FAU - Satake, Masahiro AU - Satake M FAU - Nakajima, Kazunori AU - Nakajima K FAU - Parham, Peter AU - Parham P FAU - Arase, Hisashi AU - Arase H FAU - Tokunaga, Katsushi AU - Tokunaga K FAU - Patarapotikul, Jintana AU - Patarapotikul J FAU - Yabe, Toshio AU - Yabe T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120308 PL - United States TA - PLoS Pathog JT - PLoS pathogens JID - 101238921 RN - 0 (Epitopes) RN - 0 (HLA-C Antigens) RN - 0 (KIR2DL3 protein, human) RN - 0 (Ligands) RN - 0 (Receptors, KIR) RN - 0 (Receptors, KIR2DL3) SB - IM MH - Adult MH - Alleles MH - Case-Control Studies MH - Endemic Diseases MH - Epitopes MH - Evolution, Molecular MH - Gene Expression Regulation MH - *Genetic Predisposition to Disease MH - Genetic Variation MH - Genotype MH - HLA-C Antigens/*genetics MH - Humans MH - Killer Cells, Natural/immunology MH - Ligands MH - Malaria, Cerebral/*genetics/immunology MH - Parasite Load MH - Receptors, KIR/*genetics MH - Receptors, KIR2DL3/*genetics MH - Selection, Genetic MH - Young Adult PMC - PMC3297587 COIS- The authors have declared that no competing interests exist. EDAT- 2012/03/14 06:00 MHDA- 2012/07/10 06:00 PMCR- 2012/03/08 CRDT- 2012/03/14 06:00 PHST- 2011/08/06 00:00 [received] PHST- 2012/01/19 00:00 [accepted] PHST- 2012/03/14 06:00 [entrez] PHST- 2012/03/14 06:00 [pubmed] PHST- 2012/07/10 06:00 [medline] PHST- 2012/03/08 00:00 [pmc-release] AID - PPATHOGENS-D-11-01763 [pii] AID - 10.1371/journal.ppat.1002565 [doi] PST - ppublish SO - PLoS Pathog. 2012;8(3):e1002565. doi: 10.1371/journal.ppat.1002565. Epub 2012 Mar 8.